It is. Only 15 states have a periodic inspection.

https://en.m.wikipedia.org/wiki/Vehicle_inspection_in_the_United_States

Kentucky is laughable. It’s literally only “inspected” if you bought the car from out of state, and the inspection was $15, and a sheriff comes out tells you to step on the brakes and turn your headlights and emergency lights on. You need 1 working headlight, any one working tail light, (yes you’ll pass with just that tiny one in the center of your rear window,) and any two indicator lights to pass. The guy that did mine kicked my tires and said, “yep, it’s a car.”